Perpetual calendar.



A. J. KELLY.

PERPETUAL CALENDAR.

APPLICATION lILI-ID JULY 28, 1911.

1,05 3,6 10, Patented Feb. 18, 1913.

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A. J. KELLY.

PERPETUAL CALENDAR.

APPLIOATION FILED JULY 28, 1911.

1,053,610. I Patented Feb. 18, 1913.

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ARTHUR JAMES KELLY, OF LONDON, ENGLAND.

PERPETUAL CALENDAR.

Specification of Letters Patent.

Patented Feb. 18, 1913.

Application filed July 28, 1911. Serial No. 641,073.

To all whom it may concern:

Be it known that I, ARTHUR JAMES KnLnr, a citizen of Great Britain, residing at 57 Queen Margarets Grove, Islington, London, in .the county of Middlesex and Kingdom of England, have invented a. new and useful Improvement in Perpetual,Calendars, of which the following is a specification, reference being bad to the accompanying four drawings, forming part of same.

My invention consists of certain new and useful improvements in calendars, and the principal object which I have in view is to provide a perpetual calendar wherein an entire month for'any year is made visible, with the. correct number of days only for that specific month, that is, if a month has only twenty-eight days that number of days would be shown, and not thirty or thirtyone days. To provide for this construction I employ a code which may be secured to any part of the calendar and also a code key, for use in connection therewith. In addition to showing only the correct number of days in any month, the calendar indicates the days of the week and month in any year.

In the device as illustrated and described, I have worked out a code for twelve years but the same results can be obtained for any number of years.-

In'the accompanying drawings, Figure 1 is a front view of a sheet containing indications for the days of the month and code key. Fig. 2 is a rent view of the calendar with openings for the indications of the days of the week, month and year. Fig. 3 is a sectional side view of Fig. 2. Fig. 4 is a' view of the code sheet extending over a period of twelve years.

As heretofore stated, my-improved calendar is perpetual in its character, and is designed to dis lay any entire month at a lance. The ays of the week, shown in this lnstance as running from Sunday to Saturday are laced in a fixed position upon the face of t e calendar as at M, Fig. 2.

The figures indicating the days of the month are arranged ona sheet of suitable material as X in seven vertical and thirtythree horizontal columns and as shown in Fig. 1, and at one end of the horizontal columns one to seven, and from fourteen to twenty-seven, are placed alphabetical letters commencing at A and ending with U,

as also clearly shown in Fig. 1 at N. These alphabetical letters form the code key by means of which the code sheet, Fig. 9, may be read, as hereinafter set forth. a

The sheet X extends over idle pulleys a: w and is moved by means of rollers A, B to which its ends are secured. To move the sheet X upward the roller- A is turned, and to move the same downward the roller B is rotated. By this means the sheet X may be adjusted to any position and any desired part thereof exhibited through the aperture L in the main portion Y of the calcudar and'the code key letters N are also exhibited one at a time through the aperture G.

A year sheet h provided with the desired number of year designations is mounted upon and movable by the rollers C, D and exhibited through the opening H in the calendar. I y

A month sheet k is mounted upon and movable by rollers E, F in a manner similar to sheet h and isprovided with the names of the months. which are visible in rotation through the aperture K.

.To ascertain the days of a desired month for a particular year the sheet X is moved by its operatin means until the .proper code key letter or the articular year corresponding to the sheet is exhibited through the aperture G. Thus if it is desired to show the month of June for 1911, the sheet X is moved until the code key letter Q, havin its corresponding letter in the horizontal coIumn of 1911 in the code sheet under June is visible through the aperture G, when the calendar for the desired month will be displayed, it being understood that the year sheet and month sheet will also be and a code key column containing indica-' tions adapted to be used in'connection with a code, said sheet having thirty-three horizontal rows of figures and the indications in the code column being adjacent to the first seven rows and also ad acent to the fourteenth to tvventy-seventhi ows inclusive, means for moving said sheet to exhibit a desired indication in the code .key column through one of said apertures and the cor- 2. A calendar comprising a main portion provided with a plurality of apertures, a list of the days of the Week provided upon said main portion adjacent to one of said apertures, a sheet provided with-a plurality of columns of figures designating the days of the months for any number of years and. a.

code key column containing indications adapted'to be used in connection with a code, said sheet having thirty-three horizontal*'rows. of figures and the indications in the code column being adjacent to the first seven rows and also ad acent to the fourteenth to twenty-seventh rows inclusive, rollers upon which said sheet is mounted, said rollers being adapted to move said sheetto exhibit a desired indication in the code key column through one of said apertures and the corresponding portion of the sheet through the other aperture, a movable year indication'sheet and a movable month indication sheet.

ARTHUR JAMES KELLY.

Vtitnesses:

FREDERICK LOASBY WILLIAM SMITH J ACKSON. 

